is the ethernet hardware.
I've tried both the kernel r8169 driver and the add on r8168 driver with kernels 3.4.10, 3.4.34 and 3.8.1 with the same end results.

Any ideas what might be causing this or how to fix it.
I need IOMMU enabled for what I'm doing so telling me to disable it isn't a long term fix.

Thanks for any replies

*Note: If this isn't the right sub-forum for this thread then it can be moved to one appropiate.*_________________Asus m5a99fx, FX 8320 - amd64-multilib, 3.15.9-zen, glibc-2.17, gcc-4.7.3-r1, eudev
xorg-server-1.16, openbox w/lxpanel, nouveau, oss4(2011)

Last edited by Anon-E-moose on Wed Mar 06, 2013 7:04 pm; edited 2 times in total

I went and picked up a pcie card, it's a realtek 8111/8168 but rev 06 not 09.

Seems to be working so far.

Not sure if this is a realtek problem or a combo problem, realtek 8111f/8168f AND iommu or if it's simply bad hardware.

I'm not sure how to contact the kernel developers to see if there are problems with the latest realtek chipsets and iommu,
so I'm not marking this as solved just yet.
I'll let it run overnight and then see what transpires._________________Asus m5a99fx, FX 8320 - amd64-multilib, 3.15.9-zen, glibc-2.17, gcc-4.7.3-r1, eudev
xorg-server-1.16, openbox w/lxpanel, nouveau, oss4(2011)

I have hardware with an IOMMU as well, though I'm currently not using it. Anyways, when I moved from kernel 3.0 to 3.2.9, I started getting crashes when copying large files over the network, very similar to your symptoms. I have these two ethernet cards, using the sky2 driver:

I ended up disabling the IOMMU with intel_iommu=off, however, perhaps you could try an older kernel and see if it still crashes for you? If it works fine with an older kernel, you should file a bug over here: https://bugzilla.kernel.org/

I might try that, thanks for the hint.
I have posted to the iommu kernel mailing list, so I'll see if they have any hints.

I saw it originally on 3.4.10, then upgraded 3.4.34, then 3.8.1.
The add in card has been working without a problem, though it's a older rev of the onboard chipset.
Not sure if IOMMU is to blame, the drivers or some combination.